Random GUID Generator
Generate random GUIDs in the standard 8-4-4-4-12 format used across C#, .NET, SQL Server, and Windows development — ready to paste into your code
About Random GUID Generator
Generate GUIDs in the Microsoft-style 128-bit format used throughout .NET, SQL Server, COM, and the Windows registry.
What is it?
GUID (Globally Unique Identifier) is Microsoft's name for the 128-bit UUID standard, and it is the identifier format you meet everywhere in the Windows ecosystem: C# code calls Guid.NewGuid(), SQL Server stores them in uniqueidentifier columns, COM components and Windows registry keys are addressed by braced GUIDs like {21EC2020-3AEA-4069-A2DD-08002B30309D}, and PowerShell scripts create them with New-Guid. Our Random GUID Generator produces valid, collision-free GUIDs in this standard 8-4-4-4-12 layout, so you can drop them straight into .NET projects, database seeds, installer manifests, or interface definitions without opening Visual Studio.
How it works?
Every GUID is built from cryptographically secure random bytes and follows the same version-4 structure that Guid.NewGuid() produces, which makes duplicates practically impossible. Choose how many GUIDs you need, generate them in one click, then copy a single value to your clipboard or download the whole batch for bulk work like seeding SQL Server tables or stubbing test fixtures. Because generation happens locally in your browser, the identifiers never leave your machine.
Key Features
Everything you need for perfect generation
GUID Format
Generate valid 36-character GUIDs (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)
Uniqueness Toggle
Choose to allow or prevent duplicate GUIDs in results
99 per Batch
Generate up to 99 GUIDs at once for batch operations
Braces Option
Wrap GUIDs in curly braces for compatibility with some systems
Copy to Clipboard
Copy any single GUID or all GUIDs to your clipboard instantly
Single-File Download
Download results in bulk as single text file instantly
Use Cases
Perfect for various applications and industries
Database Keys
Generate GUIDs for database keys, API testing, and more
Automated QA
Create random GUIDs for automated tests and QA
Security
Use GUIDs as unique tokens or identifiers
Data Modeling
Random GUIDs for data modeling and simulation
Frequently Asked Questions
Everything you need to know about our random guid generator
Tips & Best Practices
Pro tips to get the most out of this generator
Format for your language
Toggle braces for C# and registry work, or uppercase to match your codebase's convention.
Seed in bulk
Generate a large batch and download it to populate databases, fixtures, and import files in one go.
GUID equals UUID
They're the same 128-bit identifier — if you need version control (v4 vs v7), see the UUID generator.
Related Generators
Tools closely related to this one. Explore more in the same category
Random UUID
Generate UUIDs (v1, v4, v7) with various formats
Random Color
Generate random colors in multiple formats for design and development
Random Hex Code
Generate random hex color codes for design and development
Random Website
Discover random websites and companies worldwide
Random MAC Address
Generate random MAC addresses for network testing
Random Link
Generate random URLs and links for various purposes
Related Articles
Guides and deep dives from our blog that feature this generator
Using Random Generators to Create Test Data for Development
A practical guide for developers and QA engineers on generating realistic fake data for testing — user profiles, payment forms, addresses, and network configurations.
Understanding Cryptographic Randomness: What Makes a Generator Truly Secure
A technical deep dive into the spectrum of randomness — from basic PRNGs to quantum TRNGs — and why cryptographic-grade randomness matters for fairness, security, and trust.